Wrapping machine



Oct 25 1927' o. sANDBERG WRAPPING' MACHINE Stronwqs du, 5 im O. SANDBERGv WRAPPING MACHINE Filed Jan. 23. 1925 11 Sheets-Sheet 2 Oct. 25 5 1927.

o. SANDBERG' WRPPING MACHINE 11 Sh its-Sheet 5 Oct 25 1927 o. sANDBl-:RG

WRAPPING. MACHINE Filed Jan-23.' 1923 1l Sheets-Sheet 6 h Nn s.: VII, s.film Il Eltifozneqg l' 1 e46 49s Oct' 25 1927' o. sANDBERG WRAPPINGMACHINE A Filed Jan.23. 1923 11 Sheets-Sheet `7 19 Oct 251 27 QSANDBERGWRAPPING MACHINE Filed Jan.23. 1923 11 sheets-sheet e l o @QL 9 O.SANDBERG WRAPPING MACHINE Filed Jan.25, 1925 11 Sheets-Sheet 9 Get. 25;w27. Ld

o. SANDBERG WRAPPING MACHINE I Filed Jan.23. 1923 11 Sheets-Sheet 10OSCAR SANDBERG, F BATTLE CREEK, MICHIGAN, ASSIGNOR TO JHNSON A'TO- MATICSEALER C0., LTD., OF BATTLE CREEK, MICHIGAN, A'PTNERSHIP ASSOCIA- TION,LIMITED.

WRAPPING MACHINE.

Application led January 23, 1923. SerialNo. 614,447.

The present invention is an improvement in wrapping machines,partlcularly of the type'used for wrapping bread. -The objects of theinventlon are, generally, provide a cheap, durable and ecient device ofthis character which may be readily4 and.v

simply manufactured, opera-ted and. repaired, which has a large outputand which operates to wrap and seal a wrapper, prefl0 erably of waxedpaper, around the bread 2" Fig. 4 is a perspective View7 showing thepusher for removing the loaves from oneof the conveyors onto theelevator,l and also thel detector mechanism F ig.4 5 is a, detail viewvof the detector 2^ mechanism;

Fig. 6 is a perspective view showlng the paper feed; Fig. 7 is a detailview of the supporting fingers that bridge the space 'above the ele- :iovator as the wrapping paper is fed forward; Fig. 8 is a longitudinalsectional view through the upper part of the machine. showsing thegeneral arrangement of parts, some ofthe parts being omitted;

Fig. 9 is a detail ofthe paper-cutting mechanism;

Fig. v10 is a detail lof the feedfor the first 'intermittent conveyor;

Fig. 11 is a perspective view of the first folder and thesecondreciprocating carrler; Fig. 12 is a perspective view showing thearrangement ofthe heating elements;

Fig. 13 is a perspective view showing the folder forthe rear bottom flapandy 'the folder for the second or rear end flap;

Fig. 14 is a perspective view of the folder for the second or rear endHap;

Fig. 15 is a pulled-out view showing the means for operating thisfolder;

Fig. 16 is a detail showing a gravity pressure device that rests on theloafas it is being wrapped and also while it passes through the heaters;

Fig. 17 is a perspective View showing para ticularly the means forfeeding the sheets of 55 aper forwardly to be wrappe and also the' ngersfor support-ing and forming the lateral marginal extremlties of thewrapper on the loaf;

Fig. 18 is a perspective vview of the first 60 reciprocating carrierthat progresses the loaf from the elevator to a position between thefirst set of heaters;

Fig. 19 is a diagrammatic view indicating a loaf of bread at variousFig. 20 is a perspective view showing the second reciprocating conveyor.

Referrmg to the drawings, wherein like" reference numerals indicate likeparts,.30 is a 70 conveyor on whlch the loaves of bread are depositedeither manually or automatically and from whlch they are delivered ontothe second conveyor 31 which latter is arranged at right angles to t-hefirst conveyor 30. Both 75 of these conveyors are preferably driven in#termittently..

The conveyor is driven" from shaft 31 through arm 32, link 33, and arm34 (F 1g. 10) carrying a spring-pressed pawl 35 that engages ay ratchet36 on shaft s@ 37 carrying a pulley 38 about which the belt orAconveyor' 30 passes. The. conveyor gialsopasses around a pulley 38 onshaft The conveyor 31 is driven from -amotor 39 85 through a belt 40,shaft 41, belt 42, clutch shaft 43 and cam shaft 44. The cam shaft 44 isdriven from clutch shaft' 43 through a sprocket chain 45 engaging asprocket46 on shaft' 43 and sprocket 47 on shaft 44. Ato

sprocket 48 is mounted on shaft 44 and a sprocket-chain 49 passes aroundsaid sprocket 48 andv also around the sprocket 50 on the shaft 51. rIhisshaft 51 drives shaft 31 through gears 52 and 53. and, as here shown, 95

the conveyor- 31 is driven: intermittently from shaft 31 through a crank55 mounted on said shaft y31 connected 'to a link 56 one end of which issecured toone arm of a bell-crank lever 57 pivoted at 58. The other A10o arm of this bell-crank lever is connected to one end of a link 59,the other end of which link is connected to thel freefend of an arm 60loosely mounted on shaft 31. This arm carries a spring-pressed plunger62 one end 1,05

of which plunger engages a-seriesof lugs 63 formed on a 'sprocket wheel64. aroundJ which passes a sprocket chain, which lait- Stages of the op-65 laratlon of wrapplng and sealing; and

ter also passes around a sprocket 66 carried on a shaft 67 which shaftalso carries a second sprocket 68 about which the conveyor 31 passes.'This conveyor 31 also p asses around a sprocket 69 carried by a shaft70. Said conveyor 31 is preferably provided with Hight-s or pushers 70that receive the loaves from' conveyor 30 and progress. the sameforwardly on tracks 31" tothe position Where they are delivered to theelevator. 'In order to A.pre-vent over-movement of the conveyor 31, atwo-part brake 702l 1s secured to the frame at 7 0b and passes aroundshaft .70, the two parts being pressed into yielding engagement withsald shaft by spring 70e.

Each succeedin loaf is removed from the tracks 31 onto t e elevator 71(Figs. 6 and 8) by pusher 72 (Fig.` 4) and is positioned on saidelevator by engagement with spring plates 71a and 71?. Said pusher iscarried by an arm 73 secured to the upper end of an arm 74 pivoted at75. .The reciprocating movements transverse of conveyor 31 are impartedto the pusher 72 by a parallel link motion constituted by a shaft 76 andarms 77 and 78. The arm 7 7 is connected to arm 73, andthe arm 78 ismoved backward andforward by a cam 79 mounted on shaft 31',

said cam engaging a roller 80 carried by one arm of a bell-crank lever81 pivoted at 82 to the frame of the machine. The other arm of saidbell-crank lever 81 is connected to the arm 78 by a link 83. The arm 78`is provided with a plurality of holes or openings for the reception ofone end of the link 83 so as to vary the extent of movement of thepusher 72. 1

The elevator 71 is raised .and lowered by a ycam 85;-(Figs. 6 and '11)mounted on 'a' shaft 44 and operating through a lever'86 pivoted at 87.@ne arm of said lever carries a roller 88 that engages said camv and theother arm of said lever carries a link 89 that is connected to the bodyof said elevator. y

As the loaf of bread is raised by said elevator, a measured size ofwrapping paper is fed across thepath of movement vof said loaf. As shownparticularly in Fig. 6, the paper is carried in a roll` 90 sup orted onbrackets 91 and 92. The web o paper is fed forwardly under roller 93,thence over l roller 94, thence under roller 95, thence un der thepaper-severing blade 96 mounted on.

a shaft 97. The rollers are driven through a sprocket cha-in 98 passingaround. a sprocket wheel 99 (Fig. 3) carried by shaft 44 and alsoarounda sprocket 100 carried by shaft 101. @n the far end of said shaft 101notarse the cutter blade 96 is provided with a gear 108 that meshes witha pinion 109 mounted on shaft 101. y

The sheet of paper as it is severed is fed forward by means of aplurality of belts 11o, 111, 112 and 113 (rig. 17). A11 of these beltspass around pulleys mounted on shaft 114 and belts 110 and 113 alsopass' on shaft 31 and said sleeve also carries a The sheet as 1t 1s fedforward is controlled in its movement by rollers 117 and 118 (Fig.

Bft

6) that b ear upon the upper surface of the paper, wlres 119 arrangedabove the surface of the sheet, and spring fingers 120 that presslightly on the sheet. rlhe sheet is fed across the path of the loaf onthe elevator and fis positioned .by the front edge thereof engaging apaper stop 121. As the sheet engages this stop, the loaf of bread beingraised by the elevator is pressed against the under side of the sheetand the continued elevation of the loaf against the sheet causes Vthepaper to be wrapped over the top and down the front and rear of theloaf, as indicated at` position 5, ll`ig..19.

1n order to prevent the laterally projecting portions of the wrapperfrom breaking as the loaf is pressed against the sheet,

curved nngers 122 and 123 (Fig. 17) are provided to engage the undersurface of the sheet adjacent the ends of the loaf and to move upwardlywith the loaf and the sheet for a limited distance until the shape ofthe laterally projecting ends of the wrapper has been established."lhese fingers 122 and 123 are mounted on a shaft 124'that is providedwith an arm 125, the free end of which is connected to one end of a link126,' the other end' of which link is'connected to one arm of a lever127 pivoted atv128. This lever carries a roller 129 that is pressedagainst a cam 130 mounted on shaft 31', by a spring 131. A spring 132 isconnected to arm 125, with the result that the fingers 122 and 123 arepositively'elevated by the cam 130 for a limited distance and areretracted by the spring 132.

The rst end fold (see position 6, Fig. 19) is made While the loaf iscarried by the elevator, and the mechanisrnfor eecting this first endfold is in the form of a pair of folding blades 133 and 134 (Fig 11),each of which blades is pivoted at 135 on a carriage 136 that isvertically reciprocated on a standard 137 rlhe two carriagesare'connected by a rod 138 mounted in brackets 139 and 140 on saidcarriages 136. These carriages are elevated and depressed through links141 and 142,-the lower ends of which are connected to the free end ofarms 143 and 144 mounted on shaft 14.5. This shaft carries an arm 146 towhich is connected one end of link 147, the other end of which isconnected to the lever 86 that operates the elevator. From theconnections described, it will be seen that as the elevator is raisedthe fold blades 133 and 134 will be lowered to effectthe rst fold asshown in position 6, Fig. 19. The continued elevation of the loaf leavesit between fingers 148and 149v on the one hand and 150 on the other(Figs. 11 and 20). These fingers I148 and 149 are rigidly secured to rod138 whereas finger 150 is loosely pivoted thereonv and is provided witha projection 151 to which is secured` one Vend of a spring 152, theother end of said spring being anchored to a yoke y153. This resilientmounting of the finger 150 permits of an automatic adjustment that isdesirable on account of variation o f size of the loaf.

As the loaf is elevated between these fingers andas the'firstfold iscompleted and vjust before the lelevator starts downward and the blades133 and 134 start upward, the

. loaf is pressed against fingers 148 and 149 by additionalfingers 154and 155 (Figs. 1, 3 and 8) mounted on shaft'156. This shaft carries anarm 157, the free end o`f which 1s connected to one endof a link 158,the other end of which link is connected to an arm 159 carriedbyshaft160. This shaft 160w carries an arm 161, and isrocked through link 162,lever 163. loosely mountedon shaft 3l and roller 164 which engages thecam 165 mounted on shaft 44.,

While the loaf, is clamped between the lingers 148. and 149 on the onehand and 154 and on the other, the rear bottom fold is effected by aplate 166 as shown in Fig. 13. This plate 1s carried by 4a pair of rods167 passing through bearings. 168 and connected at one end to arms 169pivoted at 170. A link 171 is connected at one end to one of said armsand at the other end to an arm 172 secured to shaft 173 which lattercarries a second arm 174 provided with a roller 175 that engages a cam176. As the plate 166 movesA forward to position 7Aof Fig. 19.l andmakes the rear bottom fold, the folders for the second or. rear end flapcome into operation. These folders are indicated at 177 and 178 and aremounted on arms 179 and v180 carried in turn by rod 181. This rod hassecured thereto an arm 182, thefree end of which carries a roller 183that engages Ia cam slot 184 in a casting 185 (Fig. 15).I This cam slothas a horizontal run 186 and a vertical run `187, so that the folders'177 and` 178 will not only move forwardly to make plates 204 (Fig. 12)

the second or rear end fold which is shown completed in position 8 ofFig. 19, but will also have a downward movement which will cause thehorizontal part 177 of each of said folders to sharply crease the foldsthat have just been made. It is to be noted that this fold has beeneffected while the loaf was resting on the rear bottom iap folder 166.

The first and second end iiaps and the rear bottom fiap having beencompleted, the loaf is ready to be advanced, and this movement of theloaf from the blade 166 is effected by means of areciprocating pusher orcarrier 188 (Figs. 8 and 18) mounted on an arm 189 sliding in bearings190' (Fig. 18). This arm 189 is moved backward and forward from shaft 44through theA medium of cam groove 191 in' cam 85 mounted thereon. Thlscam groove is engaged by a roller 192 carried in the end of arm- 193secured to 'shaft 194 which shaft is provided with a second arm '195 towhich is secured one end of a link 196,

the other end of which is connected to a lever 197 pivoted at 198. Theother arm of said lever'is connected to one end of a link' 199, theother end of which link is secured to arm 189.

The pusher 188 is provided with two similar side members 200, each ofwhich 'is adjustable-laterally on the pusher 1,88 by means of a pin andslot connection 201, so that the pusher may be varied in size dependentupon the particular size of the loaf being wrap ed. Each of these sidemembers 201 is provlded with a plurality of fingers202 which engage andpress upon the second end flap after it has been completed and creased,as shown at position 87 of' Fig. 19. Each end member 200 is alsoprovided with a smoother 203 that engagesthe upper rear lcorner of thewrapper on the loaf. As the pusher 188 is moved forward, it. forces theloaf with the wrapper past the front edges of a pair of heating suitablysupported on the machine frame. The edge 205 of each of these heatingplates acts as a stationary folder and effects the folding of the thirdendl fiap as the loaf is forced into position between` the said heatingplates 204. Position 8, Fig. 19, shows the third end fia-p about to -beengaged with the stationary folder, and position 9,Fig'. 19, shows thewrapper with the third endjflap completely folded. In ordery thati thefingers 202 may` llt!! lil() and 12) are provided in heating. .plates204,

which recesses receive l heat is applied to the second.' and third endfolds throughthe portions 207 of the plate the fingers 202. The

iixedly secured to the . ary folder 204 intermediate said recesses 206for the purpose specified. The4 loaf withthe first, second and third endflaps completed is finally `deposited by pusher 188 between the heatingplates 204, and all of these folds are securely fixed together, whenwaxed paper is used, by the melting ofthe wax on the paper. The loaf isnow ready to be movedA forward for the purpose of completing the sealingand' delivering of the same, and for this purpose a second reciprocatingcarrier is provided which moves the loaf from between the first pair ofheating plates 204, past the stationfor effecting the fourth or finalend fold and between a second pair of heating plates for the end flaps.As here shown this carrier (Figs. 11 and 20) is in the form of acarriage which is reciprocated longitudinally on rods 208, one end ofwhich are sleeves 209 mounted on rod 138. This carrier comprises a pairof sleeves 210 that are connected together by rods 211 and 212. On theserods are carried a plurality of depending fingers 213, 214 and 215, hereshown as three. The fingers 213 and 215 are longitudinally adjustablewith respect to finger 214, in order to move them closer together orfurther apart lto accom-f modate loaves of diEerent- Isizes7 and this iseffected by pin and slot connections 213 and 215. The carriage isreciprocated by a link 216, one end ofwhich is connected torod 212 andthe other end of which is connected to a free end of an arm 217l(Fig. 1) mounted on shaft 160. The rocking of the arm 217 through theconnections heretofore described effects the movement of this carriagelongi-` tudinally" of the machine. In view of the fact that the rods 208are mountedwn` the vertically movablecarriages 136, this secondarycarrier is elevated and depressed through'these connections.

'The loaf being deposited by the pusher 188 -f between the first pair ofheating plates 204,

the secondary carrier is klowered and the loaf' is engaged between thefingers 213 and 214 in what may be designated compartment A. Through theconnections described, the loaf is thenprogressed into anintermediate'position between the first set of end heating plates 204and the second set of end heating plates 218. The secondary carrier isthen elevated, leaving the loaf 'in this intermediate positionand withthe final end fold yetvto be completed. At this point a finger 216mounted on the frame engages the second and-third end folds to hold themsecurely in place, as shown in position 10, Fig. 19. The secondarycarrier is then rerearwardly to receive another loaf in said compartmentA. Then itis lowered to engage the second loaf in said compartment A,the 4first loaf is received between fingers 214 and 215 in what may bedesignated as compartment B. The carrier then moves forward, and theloaf in compartment B is progressed past stationary end folders 217(Figs. 12 and 19) which eects the folding of the last end flap, as shownin position 11, Fig. 19, and the wrapped loaf is then deposited betweenthe second set of heating plates 218, which thoroughly heats the lastend flap Iand securely fixes it in place.

Referring particularly 4to Fig. 12, and to position 10 of Fig.19, itwill be observed that heating plates 219 are provided immediatelybeneath the intermediate position between end heaters 204 .and 218.These bottom heaters 219 operate to effectively seal the seam along thebottom `of the loaf in the great majority of cases, but it has beenexperienced that sometimes such heating is not sufficient, particularlyin case the bottom of the loaf is slightly concave. There has thereforebeen provideda bottom heater 220 which engages the bottom of the loafwhile the ends of the loaf are between the heating plates 218. vThisheater 220 is preferably 1n the form of a roller and is crownedlongitudinally of its length, and means are previded for oscillatingysaid roller to press the crowned surface thereof into intimateengagement with the paper along the bottom s ealmg lap. This oscillationof said roller 220 is eected from shaft 160 (Fig. 3) through a slottedarm 22.1, link 222, and arm 223 which latter is mounted on the rod 224una gears 228 and 229 fromshaft 230. This` shaft 230 is driven fromsli-aft 31 through a sprocket chain 231 passing around sprocket wheels232 and 233. ln order that the de livery belts 225 maybe driven at thesame speed as that of the secondary carrier when the loaves first passbetween the delivery belts, so that there will be no rubbing or relativemovement vbetween the loaves and the delivery belts, the gears 52 and 53(Fig. 3) are preferably eccentric gears, to the end that, when theloaves are subject to the infiuence of the delivery belts, the spe ofmovement of the' belts, and accordingly of the loaves, will be decreasedl so that the loaves may remain for a longer period between said beltsso that the sealing will be more perfect.

The machine is preferably provided with a paper control mechanism sothat, if no loaf is present to be wrapped, no paper will be Thesedelivery belts pref-` severed or fed forward into wrapping position.This is effected by any suitable or usual means, preferably that shownand de- `scribed in Johnson Patent No.- 1,270,416,

dated June 25, 1918.v As here shown (Fig. 4) a detector finger 234projects into the path o-f the loaves on conveyor 31. If a loa-f ispresent, the shaft 235 will be rotated and, through arm 236, the link237 will be lowered and a dog 238 connected thereto and pivoted at 239on a lever 240 which iut-urn 1s pivoted at 241, will be lowered in frontof one arm 242 of a bell-crank lever pivoted at 243. The lever 240 isprovided with a roller 244 that is engaged by a cam 245 ywhich isfastened on shaft 44. Accordingly, when said lever is rocked forward andthe dog 238 is lowered in front of the bell-crank, the latter 'will berocked so that its arm 245 is moved out of the path of a pawl 246 whichis pivoted .on a disk 247 carried by a sleeve loosely mounted on shaft44. This sleeve .also carries sprocket wheel 99 around which passes thesprocket chain 98 that drives the paper feed mechanism. This pawl 246 isadapted to engage a tooth 249 fo'rmed on a disk 250 fast on said shaft44. The rockin y.of the bell-crank out of the path of paw 246 permitsthe clutch to remain closed and the paper drive and cutting mechanism tobe operated. If no loaf is fed and the bell-crank is permitted to remainin the path of pawl 246, the latter will be. moved so that 1t w1ll notengage tooth 249 and accordingly the paper drive will not be operated.The dog 238 is normally held elevated by a counter-l weight 238 carriedlby an arm 235 on shaft 235.

At the time the sheet of paper is fed across the path of movement of theloaf on the elevator, it is desirable, if not necessary, v

that `the fedA edge of the sheet be supported in passing lover this gap.Accordingly, there is provided in 4connection with this paper feedmechanism a bridging member (Fig. 7) which 4is reciprocated forwardlyacross the gap above the elevator asthesheet passes over said gap, andthus supports said sheet at that time. This bridging member is in theform of avslide 251 provided with a pair of fingers 252 and253. Saidslide is supported and moves in a bearing254 and 1s reciprocated frommain cam shaft 44 (Flg. 18) through cam 85,v roller 192, arm 193 onshaft 194, said shaft carrying a lever 259 to the free end of which isconnected a link 260 that is connected with said slide 251.

In order to more effectively control and position the loaf as it passesbetween the heating plates, there is provided a yielding member thatrests upon and bears on the top of the loaf when it is subject to theheat of plates 204. This member, as here shown, is in the form of a pairof longitudinally arranged light metal strips 261 and,k 262 connected bya cross-piece 263. These strips are resiliently supported at their endsnearest the delivery from a cross-bar 264 carried by standards 265. Pins266 are secured to strips 261 and 262 and pass through openings in saidcross-bar 264, said pins carrying coiled springs 267 that act to pressthe member yieldingly toward the loaf. At the ends nearest the elevator,said strips 261 and 262 are connected to supports 268 and 269 carried bythe frame. Additional springs 270 may press on the cross-piece 263, andthe latter is providedwith a curved spring tongue 271 that bears on thetop of the loaf while it is between the heating plates 204, this tongueacting to position the loaf and press it yieldingly against the supportalong which it is progressed. These strips 261 and 262 also act tosupport the bearings for shaft 156 (Fig. 8).

The machine may be turned over by hand b rotating shaft 44 through wheel272 (Fig. 3i mounted on shaft 273 Acarrying sprocket wheel 274-aroundwhich passes chain 275 that also passes around sprocketlwheel 276 onshaft 44. And the machine may be controlled from either side. throughclutch 277 carried von clutch' shaft 43 through clutch lever 278 pivotedat 279. This lever may be moved either through link 280 and handpiece281 or link 282 and lever 283 pivoted at 284.

From the.foregoingdescription of the construction and operation of thedevice, it will be appreciated that there hasbeen pro-vided a simple,cheap and efficient structure that operates to automatically andeffectively wrap speed.

W'hilefor the purpose of explanation, one expression of the inventiveidea has been illustrated and described, it is to be understood that theinvention is not limited thereto, and that theinventive idea may beembodied in various mechanical ex ressions within the limits of theappende claims, and that the device may also be used in the wrapping orwrapping and sealing of other articles; and, further, that where in theclaims reference is vmade, to loaves, it is to be understood that thislanguage is to be interpreted as applying equally to any other articleto be wrapped.

What is claimed is 1. In a device of the character described, a sourceof paper supply, a vertically movable elevator. means for feeding apredetermined size of paper over said elevator, and a bodily-movablebridging member reciprocable across the elevator space to support thepaper as it is fed across said space.

2. ln a device of' the character described, a source of paper supply, avertically movable elevator` means'for feeding a predetermined size ofpaper over said elevator, and

and seal loaves orl the like at higha reciprocating member movable intoand out of bridging relation with said elevators ace.

p3. In a device of the character described, a source of paper supply, avertically movable elevator for the loaves or the like, means forfeeding a predetermined size of paper above said loaf as it is beingelevated, means engaging a projected portion of said sheet yat itsunderside to support the same as the loaf and sheet thereon areelevated, intermittently operating means for moving said sheetsupporting means upwardly, and a spring for moving said sheet supportingmeans downwardly. Y

4. In a device of the'character described, a vertically reciprocatingelevator, a source of paper supply, meansfor feedinga measured size ofpaper over the loaf on said elevator, folders operating to fold thefirstl end flap and the rear bottom flap practically simultaneously,folding mechanism operating to fold a second end flap while the loafrests on the bottom folder, andl stationary folders to fold the thirdand fourth end aps.

5. In a device of the character described, a vertically reciprocatingelevator, a source of paper supply, means for feeding a measu'red sizeof paper over the'loaf on said elevator, vertically' reciprocatingfoldersv 0py erating to fold the first end flap while the loaf is on theelevator, a rear bottom iiap folder operating substantiallysimultaneously with said vertically reciprocating folders, forwardly anddownwardly oving folders for the second end flap, and stationary foldersfor the third and :fourth end flaps.

6. In a device of the character described, i a vertically reciprocatingloaf-elevator, means for feeding a wrapper in position over the loaf onsaid elevator, means for folding rear end flaps, a rear bottom flap anda front bottom flap of the wrapper onv said loaf, means operating afterfolding of the rearend and the rear bottom flaps to feed the loafforwardly through the machine from the elevator and past the front bot-ytom flap folding means, front end ap folders provided with heating meansand between which the loaf is delivered, and bottom end flap foldersprovided with heating means and between which the wrapped loaf issubsequently delivered and finally sealed.

'Z'. In a device of the character described,

" a vertically reciprocating elevatona source of paper supply, means forfeeding a measured size of paper over the loaf on said elevator, meansfor feeding the loaf forward from above said elevator, means for foldingvarious end and bottom deps before said loaf feeding means operate,front end flap folders provided with heating means and between whichsaid loaves are successively delivered by saidloaf feeding means beforethe bottom end flaps are folded, bottom. end dep folders provided withlheating means and between which each loaf is subsequentlydelivered, anda'positively actuated-heated roller operating on the bottom of theloafadjacent said bottom end flap folders.

8. vIn a device of the character described, a vertically'reciprocatingelevator, a source of papervsupp'ly, means for feeding a measured sizeof paper over the loaf on said elevator, means for feeding the loafforward from above lsaid elevator, means for folding various end andbottom flapsbefore said loaf feeding means operate, front end' apfoldersprovided with heating means and between which said loaves aresuccessively delivered by said loaf feeding means before the bottom endaps are folded, bottom end flap folders provided with heatin, ;l meansand between which each loaf is subsequently delivered, and oscillatingheating means operating' on the bottom of the loaf adjacent said bottomen'djdap folders.l

9. ln a device of the character described, a vertically reciprocatingloaf-elevator,

'means for feeding a wrapper in position over the loaf on said elevator,means for folding `rear end flaps, a rear bottom flap and a front bottomHap of the wrapper on said loaf, means operating after folding of therear end and the rear bottom flaps to feed the' loaf4 forwardly throughthe machine from the elevator and past the front bottom flap foldingmeans, front end flap folders provided with heating means and betweenwhich the loaf is delivered, bottom end Hap folders provided withheating means and between which the wrapped loaf is subsequentlydelivered and finally sealed, and independent heating means operatinglon the bottom of the wrapped loaf simultaneously with the heating meanson said lbottom end dan folders. l

l0. In a device of the character described, a vertically reciprocatingelevator, a source of -paper supply, means for feeding a measuredsize ofpaper over the loaf on said elevator, means'for feeding the loaf forwardfrom above said elevator, means for ed'ecting various end and bottomfolds before said loaf feeding means opera-te, front end flap foldersprovided with heating means and between which said loaves aresuccessively de- IUS retenes 4operate on the Wrapper after the operationof the rear end and rear bottom fiap folding I'neans, a bottom end flapfolder provided with a second heating means and operating on the Wrapperafter the front end flap has been folded, and means for feeding the loaf.pastthe front bottom flap folder, the front end'flap folder, and saidbottom end flap folder.

12. In adevice of the character described, a vertically reciprocatingloaf-ellevator, means for feeding a Wrapper in position over the loaf onsaid elevator, means for folding a rear end flap, a rear bottom flap,anda front bottom flap of the Wrapper on .said loaf,a front end flapfolder provided With a first heating means and arranged to operate onthe Wrapper after the operation of the rear end and rear bottom'iiapfolding means,

a bottom end flap folder provided With a second heating means andoperating on the Wrapper after the front end flap has been folded, meansfor feeding the loaf past the front bottom fla folder, the front endflap folder, and said lloottom end flap folder, and a third heatingmeans disposed adjacent the bottom end flap folder and operating on thebottom of the Wrapped loaf simultaneously with the heating means of thebottom end flap folder.

13. In a device of the character described, a source of paper supply,means for feeding a measured size of paper over the loaf to l beWrapped, means for folding the end flaps,

heating means engaging the same at the ends ofthe loaf, a movable.heating roller engaging the bottom of the loaf, a source of power, andconnections between said source of power and the movable heating rollerfor positively actuating the latter.-

14. In a device of the character described, a source of paper` supply,means for feeding a measured size of 'paper over the loaf to be Wrapped,means for folding the end flaps, heating means engaging the same at theends of the loaf, a movable heating roller'crowned longitudinally andengaging the bottom of the loaf, and mechanism for oscillating saidroller. l

15. In a device of the character described, a source of paper supply,means for feeding a measured size of paper over the loaf to be Wrapped,a pair of spaced heating plates for each end ofthe loaf,'movable foldingmeans for making various end and bottom folds before the loaf reachesthe First heating plates, stationary folders for completing the end andbottom folding before the second heating plate is reached, and anoscillating heated roller engaging the bottom of a wrapped loaf afterthe operation of said folders thereon.

16. In a device of the character described, a source of paper supply,means for feeding a measured size of paper over the loaf-to be 4wrapped, a pair of spaced heating plates for each end of the loaf,movable folding means for making various end and bottom folds before.the loaf reaches the first heating plates, stationary folders forcompleting the end and bottom folding before the second heating plateis'reached, a delivery, and a reciprocating member moving said loavesfrom said iirst heating plate *to a position intermediate said plates,then to the second heating plates and then to the delivery.

17. In a device of th'e character described, a source of paper supply,means for feeding a measured size of paper over the loaf to be Wrapped,a pair of spaced heating plates for each en d of the loaf, movablefolding means for making various end and bottom folds before the loafreaches the first heating plates, stationary folders for completing theend and bottom foldin before the second heating; plate is reache adelivery, .and a reciprocating and vertically moving carriage forprogressing the loaves step by step from the first heating plates to thedelivery.

18. In a device of the character described, a source of paper supply,means for feeding a measured size''f paper over the loaf 'to be Wrapped,a pair of spaced heat-ing plates for each end of the loaf, movablefolding means for making various end and bottoni folds before the loafreaches the first heating plates, stationary folders for com pleting theend and bottom folding,r before the second heating plate is reached, adelivery, and a, reciprocating and'vertically I moving carriage providedwith rigid depending fingers forming compartments for the loavesprogressing the loaves from the first heating plate to the delivery.

19. In a device of the character described, a source of paper supply,means for feeding a measured size of paper over the loaf to be Wrapped,a pair of spaced heating plates for each end of the loaf, movablefolding means for making various end and bottom folds before the loafreaches the rst heating plates, stationary folders for completing theend and bottom folding before the second heating plate is reached, adelivery, a reciprocating carriage progressing theloaves from the firstheating plate to the delivery, and a vertically movable support on whichsaid carriage reciprocates.

20. In a device of the character described, an elevator for raising theloaves to be wrapped7 ya carrier reciprocating longitudinally of themachine and removing the loaf from above said elevator, a secondindependent reciprocating carrier moving the loaf' forward from thepoint of delivery by the first carrier, a vertically movable support-onMJU ed, means raising and lowering said support at predeterminedintervals, and means for reciprocatin the second carrier on its vertically mova le support.

21. In a device of the character described,

van elevator for raising the loaves to be Wrapped, a carrierreciprocating longitudinally of the machine and removing the loaf fromabove said elevator, and a second independent reciprocating carriermoving the same forward from the point of delivery by the firstcarrier', said second carrier being provided with a plurality of rigiddownwardly extending arms forming compartments for the loaves.

22. In a devic' of the' character described, an elevator for raising theloaves to be Wrapped, a carrier reciprocating longitudinally'of themachine and removing the loaf from abovesaid elevator, a secondindependent reciprocating carrier moving the same forward from the pointof delivery by the first carrier, said secondcarrier being provided witha lplurality of rigid downwardly extending arms forming compartments forthe loaves, and means for adjusting said arms toward and-from eachother.

23. In a device of the character described, a iap folder carriage, acarrier slidably 'mounted on said flap folder carriage and provided withrigid arms forming compartments for the loaves, means for reciprocatingsaid loaf carrier to move the loaves.

step by ste through the machine, and means for o'wering and raising theHap lfolder carriage to engage the loaf carrier with and disengage -thesame from lthe loaves.

24. In a device of the character described, the combination of avertically reciprocating carriage, an end folder mounted thereon andmovable therewith, a carrier for the loaves mounted on Said carriage formovement to. Ward and away from the same, and means for reciprocatingsaid carrier longitudinally of the machine.

25. In a device of the character described, the combination of anelevator, a vertically reciprocating carriage, a longitudinallyreciprocable carrier movable with said carriage, and common means foroperating said elevator and carriage.

26. In a device of the character described,-

the combination of an elevator, a vertically reciprocating' carriage, alOmsgitudinallyl reciprocable carrier movable. with said carriage, an end folder for the Wrapper .also movable with said carriage, and commonmeans for operating said elevator and car riage.

27. In a device of the character described, the combination of a rearbottom Hap folder, a movable support therefor, an end iap folder movablymounted on said support in proximity to the bottom Hap folder,

means for imparting translatory movement to said support and folders,and means for 'to make the fold and, in another plane to crease thefold.

30. In a device of the character described, the combination of a rearendv Hap folder, and a cam for guiding the same in two planes to makethe fold and crease the same.

3l. Inv a device of the character described,

the combination of a rear end flapfolder, means for reciprocating thesame, and a cam for guiding the folder in two planes to make the foldand crease the same.

32. In a device of the character described, the combination of a rearbottom flap folder, a lrearfend flap folder',` common means forreciprocating the same, and means for moving one folder relatively tothe other during their reciprocating movement.

` 33. In a device of the character described, the combination of a rearbottom fiap folder, a rear 'end Hap folder, common means forreciprocating the same, and means for envgaging thelatter folder withthe wrapper while it is supported by the former,

34. In a device of the character described, an end flap folder, areciprocating structure on which said folder is mounted, means forreciprocating said structure, a loaf-carrier slidably mounted on thereciprocating struc,- ture for movement substantially at right anglesthereto, and means for reciprocating said loaf-carrier.

35.l In a device of the character described, a pair of heating platesprovided. with re'- ceses, means for folding the front and rear endflaps, and means for moving the loaf between'said' plates and havingfingers adapted to engage in said recesses.

36. In a device of the character described, the combination of aloaf-elevator, downwardly projecting fingers receiving the loaf from theelevator, means for raising and lowering said fingers, a gripping deviceauto# matically moved into engagement with the loaf when the same ispositioned between said fingers, and a loaf-pusher movable past saidgripping device and adapted to be reciprocated between the elevator andthe loaf receiving ngers when the latter are tao the combination of aloaf-elevator, downply, means for feeding a measured size of wardlyprojecting lingers arranged torepaper over the loaf to be wrapped, averceive a loaf from the elevator and adapted to tically reciprocatingfolder operating to resiliently engage said loaf, means for imfold thefirst end flap on one side of the loaf, parting raising and loweringmovements to a rear bottom flap holder, folding mecha-- said loafreceiving fingers at-predetermined nism operating to Vfold a second endflap intervals, other fingers moved into yielding while the loaf restson the bottom folder, engagement with the loaf when the same is andother folders to fold the .remaining end positioned between the loafreceiving fingers, fiaps. y

and a loaf-pusher movable past said last 44. In a device of thecharacter described, named ngers and adapted to be recipro.- a source ofpaper supply, means for feeding cated between the elevator and the loafrea measured size of paper over Va loaf or the ceiving fingers when thelatter are raised. like to be wrapped, means for initially asso- 38. Ina device of the character described, ciating the loaf with the wrapper,means for the combination of means for forming the feeding the loaf withthe wrapper thereon front and rear end folds, heating plates enforwardlythrough the machine, means for gaging both of said folds, a lingerpressing folding various end and bottom fia-ps prior on said foldsbefore the bottom end iap is to the operation of said loaf feedingmeans, sealed, means `for folding the bottom end front end fold formersprovided with heatflap, and other heating plates for sealing the ingmeans and between which the loaf is desame.

39. In a device of the Icharacter described, the combination of meansfor partially livered by said loaf feeding means, and bottom end foldformers provlded with heating means and between which the loaf issubseping bottom fiaps and rear end folds, means and sealing operations.

for thereafter forming front end folds and 45. In a device of thecharacter described, provided with heating means for sealing a source ofpaper supply, means for feeding said front end folds tothe rear endfolds, a measured sizeof paper over a loaf or the means holding saidsealed folds in place. like to be wrapped, means for initially asmeansfor subsequently folding bottom end sociating'the loaf with the wrapper,means iapson the previously folded and sealed endv for feeding the loafwith the wrapper therefiaps to complete the wrapping operation, onforwardly through the machine, means and other heating means for'finally sealing for folding various end and bottom flaps the wrappedarticle. prior to' the operation of said loaf feedil 4 0. Incombination, a vertically movable means, front end fold formers providflap folder carriage, a loaf carrier slidably with heating means andbetween which the mounted thereon, heating means past which loaf isdelivered by the loaf feeding means, the wrapped loaf is progressed bysaid loaf bottom .end fol-d 'formers provided with a carrier, acontinuously moving delivery 'second heatin means .and between whichmechanism, and means for imparting variathe loaf is susequentlydelivered to comble Speed thereto. plete the wrapping operation, and athlrd wrapping a loaf orthe like to form overlapquently delivered ltocomplete the wrappmg 41. -In combination, va. 'loaf pusher, heatheatingmeans o eratlng'on the bottom ofy ing means between which the wrappedloaf the wrapped loa and disposed adjacent said is delivered by saidpusher,avariably speedbottom end fold formers. ed delivery mechanism, avertically movable 46. In a device of the character described, Hapfolder carriage, and a reciprocating a source of paper supply, means forfeedmg loaf carrier on said a folder carriage for a measured size ofpaper over the loaf to be moving said wrapped oa'f into engagement wraped, means for feeding the loaf forwith said delivery mechanism. warthrough the machine, means for fold- 42. In combination, a pusher,heating ing various end and bottom aps before said means between whichthe wrapped loaf is feeding means operate, front end fold formdeliveredb said pusher, a delivery mechaers provided with heating means andbenism space from the heating means, a v ertween which said -loaves aresuccessively detically movable support, al loaf carrier relivered bysaid loaf feeding means, bottom ciprocating on said support for movingsaid end fold formers rovided With,..a second lwrapped loaf-intoengagement with the deheating means and etween which each loaf liverymechanism, and means raising and is subsequently delivered, and a thirdoscillowerin 'the movable support at predeterlating heating meansoperatin on the botmined intervalsgfor imparting like movetom of theloaf adjacent sai bottom end ments to the loaf-carrier as the same Aisref fold formers. ciprocated. In testimony whereof I have signed this43. In a device of the character described, specification. thecombination of a source of paper sup- OSCARSANDBERG.

